DOCUMENTATION OF LAND USE INDICATORS ... - GaBi Software
DOCUMENTATION OF LAND USE INDICATORS ... - GaBi Software
DOCUMENTATION OF LAND USE INDICATORS ... - GaBi Software
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
For the calculation<br />
of indicator va alues, indiccator<br />
qualitie es Q have to t be calculated<br />
for the<br />
state andd<br />
land use tyypes<br />
of the land before e transformaation<br />
(t1) du uring use (t2 and t3), and<br />
after rege eneration off<br />
the land ( (t4) (cp. BEECK,<br />
BOS, WITTSTOCK W<br />
ET AL. 2010).<br />
At this s stage it is assumed,<br />
that thee<br />
occupationn<br />
phase is a static situa ation; conseequently,<br />
fo or all proces sses calculaated,<br />
t2 and t3 have thee<br />
same land use type. FFor<br />
each ind dicator, occcupation<br />
and d transformation<br />
in genneral<br />
are ca alculated ass<br />
follows:<br />
Occupatioon<br />
indicatoor<br />
value = (Q Q(t4, ref)-Q(tt2,3))*area<br />
used*time u of occupattion<br />
Transformmation<br />
indicctor<br />
value = (Q(t4)-Q(tt1))*area<br />
us sed<br />
The resultiing<br />
units of qualities, tr ransformatioon<br />
and occupation<br />
indicator<br />
valuees<br />
as used in <strong>GaBi</strong> aree<br />
shown in TTable<br />
1.<br />
Table 1: Inndicator<br />
unnits<br />
Indicator<br />
Erosion Reesistance<br />
Mechanicaal<br />
Filtration<br />
Physicoch<br />
Filtration<br />
Groundwaater<br />
Replenishmment<br />
Biotic Prodduction<br />
Positive occcupation<br />
inndicator<br />
valu ues can be interpreted as follows:<br />
Eroosion<br />
Resistance<br />
(expr ressed by kkg<br />
of erosio on): kg of soil<br />
eroded iin<br />
addition to naturallyy<br />
occcurring<br />
soil eerosion<br />
due e to the effeects<br />
caused by the prod duction of oone<br />
function nal unit.<br />
Meechanical<br />
Filtration:<br />
am mount of waater<br />
that cou uld not be filtered f due e to the effe ects causedd<br />
by tthe<br />
producttion<br />
of one functional f uunit.<br />
2<br />
kg dry masss<br />
emical<br />
Quality y unit<br />
[kg/(ha* *a)]<br />
[cm/d]<br />
[cmol/kg<br />
[mm/a]<br />
gsoil]<br />
[kg 2 /(m² ²*a)]<br />
Tran nsformation<br />
indic cator unit<br />
[kg/a a]<br />
[cm* m²/d]<br />
[(cmo<br />
[(mm m*m²)/a]<br />
[kg/a a]<br />
ol*m²)/ kgsoil]<br />
OOccupation<br />
unnit<br />
[kkg]<br />
[ccm*m²]<br />
[(ccmol*m²*a<br />
)/<br />
[mmm*m²]<br />
[kkg]<br />
indicator<br />
kgsoil]<br />
Page 2 / 222
Change language